var inc = 2;
  function showAtElement(el_near, el_this) {
    var p = getAbsolutePosY(el_near);
    el_this.style.left = p.x + "px";
    el_this.style.top = p.y + el_near.offsetHeight + "px";
  };
  function showOnElement(el_near, el_this) {
    var new_width = inc*el_near.width;
    var new_height = inc*el_near.height;

    var p = getAbsolutePos(el_near);
    var new_x = Math.floor(p.x - (new_width-el_near.width)/2)+"px";
    var new_y = Math.floor(p.y - (new_height-el_near.height)/2)+"px";

    el_this.style.left = new_x;
    el_this.style.top = new_y;
  };

  function getAbsolutePos(el) {
    var r = { x: el.offsetLeft, y: el.offsetTop };
    if (el.offsetParent) {
      var tmp = getAbsolutePos(el.offsetParent);
      r.x += tmp.x;
      r.y += tmp.y;
    }
    return r;
  };
  function getAbsolutePosY(el) {
    var r = { x: Math.floor((window.screen.availWidth-20-800)/2), y: el.offsetTop };
    if (el.offsetParent) {
      var tmp = getAbsolutePos(el.offsetParent);
      r.y += tmp.y;
    }
    return r;
  };

  function CreateBigImage(el_from, evt){
    evt = (evt) ? evt : ((window.event) ? event : null);
    elem = document.getElementById("big_img");
    if( elem != null){
      DeleteBigImage(evt);
      elem.parentNode.removeChild(elem);
    }
    var new_width = inc*el_from.width;
    var new_height = inc*el_from.height;
    if (el_from.src.indexOf("thumb") != -1){
      var file_name = el_from.src.replace("thumb", "big_thumb");
      if (document.getElementById("big_img") == undefined) {
         div_obj = document.createElement("div");
         div_obj.setAttribute("id", "big_img");
         div_obj.setAttribute("style", "");
         el_from.parentNode.appendChild(div_obj);
      } else {
         var div_obj = document.getElementById("big_img");
      }
      div_obj.style.position = 'absolute';
      div_obj.style.display = 'none';
      div_obj.style.cursor = 'pointer';
      div_obj.innerHTML= '<img src="'+file_name+'" class="icon">';
      div_obj.onmouseout = DeleteBigImage;
      div_obj.onclick = OnLink;
      if (document.layers){div_obj.captureEvents(Event.MOUSEDOWN);div_obj.onmousedown=clickNS;}
      else{div_obj.onmouseup=clickNS;div_obj.oncontextmenu=clickIE;}
      div_obj.oncontextmenu=new Function("return false")


      showOnElement(el_from, div_obj);
      div_obj.style.display = 'block';
    }
  }
  function CreateLister(el_from, evt){
    if (document.layers){el_from.captureEvents(Event.MOUSEDOWN);el_from.onmousedown=clickNS;}
    else{el_from.onmouseup=clickNS;el_from.oncontextmenu=clickIE;}
    el_from.oncontextmenu=new Function("return false")
  }
  /*function OnLink(evt){
    alert(this.parentNode.href);
    //location.href=this.parentNode.href;
    return false;
  } */
  function DeleteBigImage(evt){
    evt = (evt) ? evt : ((window.event) ? event : null);
    var elem = document.getElementById('big_img');
    elem.style.display = 'none';
    evt.cancelBubble = false;
  }
  function OnRightClick(e) {
    if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
      return false;
    else if (navigator.appName == 'Microsoft Internet Explorer' &&  (event.button == 2 || event.button == 3)) {
      event.cancelBubble= true;
      alert("Sorry, you do not have permission to right click.");
      return false;
    }
    return true;
  }
  function clickIE() {if (document.all) {alert(message); return false;}}
  function clickNS(e) {
    if(document.layers||(document.getElementById&&!document.all)) {
      if (e.which==2||e.which==3) {return false;}
    }
  }
  function OnLink(evt){
    if(window.jump_type==null) location.href=this.parentNode.href;
    else {
      switch(window.jump_type){
        case 'popup':
          window.open(this.parentNode.href, 'view_img', 'height=300, resizable=yes, scrollbars=no, width=400px, menubar=no,status=no, left=200px, top=20px');
          break;
        default:
          location.href=this.parentNode.href;
          break;
      }

    }
    return false;
  }
// -->